BuildingSceneLayer | References | ArcGIS Maps SDK for JavaScript

import BuildingSceneLayer from "@arcgis/core/layers/BuildingSceneLayer.js";

Inheritance:: BuildingSceneLayer→Layer→Accessor

Since: ArcGIS Maps SDK for JavaScript 4.10

Overview

The BuildingSceneLayer is designed for visualizing buildings with detailed interiors in a SceneView. These building models are usually exported from Building Information Modeling (BIM) projects. The data in a BuildingSceneLayer can represent walls, lighting fixtures, mechanical systems, furniture and so on.

Structure of a BuildingSceneLayer

BuildingSceneLayers visualize complex digital models of buildings and allow you to interact with all the components of the building. Because of the high complexity, the data in a BuildingSceneLayer is organized in BuildingGroupSublayers which contain BuildingComponentSublayers.

Often, the BuildingSceneLayer contains an overview BuildingComponentSublayer that can be loaded to display the exterior shell of a building.

This helps to get a faster preview of the whole building without loading all interior features:

building-scene-layer-overview

The BuildingSceneLayer also contains a Full Model BuildingGroupSublayer with all the features in a building grouped by disciplines: Architectural, Structural, Electrical and Mechanical. Each of the disciplines is a BuildingGroupSublayer that contains BuildingComponentSublayers with features such as rooftops, walls, doors, AC units, lighting fixtures, columns or foundations.

You can see this layer structure in the LayerList of the BuildingSceneLayer with Slice widget sample:

building-scene-layer-fullmodel

Publishing a BuildingSceneLayer

Building data coming from a Revit file can be imported and published as a Scene Service using ArcGIS Pro version 2.3.

The Scene Service is identified by the url or portalItem of the ArcGIS Server REST resource:

const buildingLayer = new BuildingSceneLayer({
  url: "https://tiles.arcgis.com/tiles/V6ZHFr6zdgNZuVG0/arcgis/rest/services/Esri_Admin_Building/SceneServer",
  title: "Administration Building, Redlands - Building Scene Layer"
});

Visualization

Being able to visualize detailed building information in its spatial context and landscape is a useful capability. To extract even more information from the visualization, attribute driven renderers and visual variables can be assigned to BuildingComponentSublayer.renderer. For example the Doors sublayer can use a UniqueValueRenderer to render all the interior doors that need replacement with a red color:

Filtering data

Often, the features in a BuildingSceneLayer might occlude one another. Attribute based filtering can be used to display only the features that satisfy a certain SQL expression. To filter features based on their attributes use the filters collection. The Filter BuildingScenelayer sample shows how to filter floors in a BuildingSceneLayer.

BuildingSceneLayers can also be filtered by applying client-side filters. Use the BuildingComponentSublayerView.filter property on a BuildingComponentSublayerView to apply spatial or attribute based filters.

Popups

Sublayers in a BuildingSceneLayer can have customized popup content using the BuildingComponentSublayer.popupTemplate property. Arcade expressions in a BuildingComponentSublayer.popupTemplate are also supported.

Querying

The component sublayers of a BuildingSceneLayer and their sublayer views can be queried, but they return different results. Queries on a BuildingComponentSublayer return results from all the features in the sublayer, while queries on the BuildingComponentSublayerView return results for features that are currently loaded in the view.

Querying a BuildingComponentSublayer retrieves results from the attributes in the associated feature layer. If the layer doesn't have an associated feature layer, then the query will be rejected with an error. Queries on the component sublayer are powerful because they are made on all the features in the component sublayer.

For making attribute based queries on a BuildingComponentSublayerView the required fields need to be specified in the outFields property of the BuildingSceneLayer to ensure that attribute values are available on the client for querying. You can use BuildingComponentSublayerView.availableFields to inspect which fields are available on the client. On a BuildingComponentSublayerView spatial queries are possible by setting the Query.geometry and the Query.spatialRelationship of the query. Note that for this type of layer the spatial relationships are evaluated based on the Extent and not the footprint of the feature. Spatial queries are supported only when the Query.spatialRelationship is set to intersects, contains, or disjoint.

Query method	BuildingComponentSublayer (only works if the BuildingSceneLayer has an associated feature layer)	BuildingComponentSublayerView (works on all BuildingSceneLayers)
queryExtent	returns the 2D extent of all features in the sublayer that satisfy the query	returns the 3D extent of currently loaded features in the sublayer that satisfy the query
queryFeatureCount	returns the number of all features in the sublayer that satisfy the query	returns the number of currently loaded features in the sublayer that satisfy the query
queryFeatures	returns all the features in the sublayer that satisfy the query	returns the currently loaded features in the sublayer that satisfy the query
queryObjectIds	returns objectIds of all the features in the sublayer that satisfy the query	returns the objectIds of currently loaded features in the sublayer that satisfy the query

Known Limitations

Spatial queries have the same limitations as those listed in the projectOperator documentation. Spatial queries use the Extent of the feature and not the footprint when calculating the spatial relationship with the query geometry. This means that a feature might be returned from the query, even though its footprint is not in a spatial relationship with the geometry. Currently only intersects, contains, and disjoint spatialRelationships are supported on spatial queries. Spatial queries are currently not supported if the BuildingSceneLayer has any of the following SpatialReferences:

GDM 2000 (4742) - Malaysia
Gsterberg (Ferro) (8042) - Austria/Czech Republic
ISN2016 (8086) - Iceland
SVY21 (4757) - Singapore

Get extent of features in a BuildingSceneLayer

BuildingSceneLayers do not return the raw geometry as this is a binary format. To obtain spatial information you can query the 2D extent or 3D extent of features in a component sublayer. The 2D extent can be retrieved for all features (even the ones that are not loaded yet) with the BuildingComponentSublayer.queryExtent() method on the BuildingComponentSublayer. This method only succeeds if the BuildingSceneLayer has an associated feature layer. The 3D extent can only be queried for the features that are already loaded, by using the BuildingComponentSublayerView.queryExtent() method on the BuildingComponentSublayerView.

See also

Constructors

Constructor

Parameters

Parameter	Type	Description	Required
properties	`BuildingSceneLayerProperties`

See the properties table for a list of all the properties that may be passed into the constructor.

Example

// Typical usage
layer = new BuildingSceneLayer({
  url: // url to the service
});

Properties

Any properties can be set, retrieved or listened to. See the Watch for changes topic.

Property	Type	Class
`activeFilterId`	`string \| null \| undefined`
`allSublayers` readonly	`ReadonlyCollection<BuildingSublayerUnion>`
`apiKey` inherited	`string \| null \| undefined`	APIKeyMixin
`copyright` inherited	`string \| null \| undefined`	SceneService
`customParameters` inherited	`CustomParameters \| null \| undefined`	CustomParametersMixin
`declaredClass` readonly inherited	`string`	Accessor
`elevationInfo`	`ElevationInfo<"absolute-height"> \| null \| undefined`
`filters`	`Collection<BuildingFilter>`
`fullExtent` inherited	`Extent \| null \| undefined`	Layer
`id` inherited	`string`	Layer
`layerId` inherited	`number`	SceneService
`legendEnabled`	`boolean`
`listMode` inherited	`LayerListMode`	Layer
`loaded` readonly inherited	`boolean`	Layer
`loadError` readonly inherited	`EsriError \| null \| undefined`	LoadableMixin
`loadStatus` readonly inherited	`"not-loaded" \| "loading" \| "failed" \| "loaded"`	LoadableMixin
`loadWarnings` readonly inherited	`any[]`	LoadableMixin
`maxScale` inherited	`number`	ScaleRangeLayer
`minScale` inherited	`number`	ScaleRangeLayer
`opacity` inherited	`number`	Layer
`outFields`	`string[] \| null \| undefined`
`parent` inherited	`Map \| Basemap \| Ground \| GroupLayer \| CatalogDynamicGroupLayer \| CatalogLayer \| null \| undefined`	Layer
`persistenceEnabled` inherited	`boolean`	OperationalLayer
`portalItem` inherited	`PortalItem \| null \| undefined`	PortalLayer
`spatialReference` inherited	`SpatialReference`	SceneService
`sublayers` readonly	`Collection<BuildingSublayerUnion>`
`summaryStatistics` readonly	`BuildingSummaryStatistics \| null \| undefined`
`title`	`string \| null \| undefined`
`type` readonly	`"building-scene"`
`uid` readonly inherited	`string`	IdentifiableMixin
`url` inherited	`string \| null \| undefined`	SceneService
`version` readonly inherited	`SceneServiceVersion`	SceneService
`visibilityTimeExtent` inherited	`TimeExtent \| null \| undefined`	Layer
`visible` inherited	`boolean`	Layer

activeFilterId

Property

Type: string | null | undefined

Since: ArcGIS Maps SDK for JavaScript 4.12

The id of the currently active filter. To activate one of the filters assign its BuildingFilter.id to this property.

allSublayers

readonly Property

Type: ReadonlyCollection<BuildingSublayerUnion>

A flat Collection of all the sublayers in the BuildingSublayer.

Example

// finds the sublayer containing the doors
// use modelName to identify each layer as this is a standard name
const doorslayer = buildingSceneLayer.allSublayers.find(function(sublayer) {
  return sublayer.modelName === "Doors";
});

apiKey

inherited Property

Type: string | null | undefined

Inherited from: APIKeyMixin

Since: ArcGIS Maps SDK for JavaScript 4.20

An authorization string used to access a resource or service. This property will append the API key to all requests made by the layer to the service. API keys are generated and managed in the portal. An API key is tied explicitly to an ArcGIS account; it is also used to monitor service usage. Setting a fine-grained API key on a specific class overrides the global API key.

If loading a secure layer with API authentication via a PortalItem, the API key needs to be set on the layer's portalItem property.

See also

Example

// set the api key to access a protected service
const layer = new FeatureLayer({
  url: serviceUrl,
  apiKey: "YOUR_API_KEY"
});

copyright

inherited Property

Type: string | null | undefined

Inherited from: SceneService

The copyright text as defined by the scene service.

customParameters

inherited Property

Type: CustomParameters | null | undefined

Inherited from: CustomParametersMixin

Since: ArcGIS Maps SDK for JavaScript 4.18

A list of custom parameters appended to the URL of all resources fetched by the layer. It's an object with key-value pairs where value is a string. The layer's refresh() method needs to be called if the customParameters are updated at runtime.

Example

// send a custom parameter to your special service
let layer = new MapImageLayer({
  url: serviceUrl,
  customParameters: {
    "key": "my-special-key"
  }
});

declaredClass

readonlyinherited Property

Type: string

Inherited from: Accessor

The name of the class. The declared class name is formatted as esri.folder.className.

elevationInfo

autocast Property

Type: ElevationInfo<"absolute-height"> | null | undefined

Specifies how features are placed on the vertical axis (z).

This property only affects BuildingSceneLayer when using the absolute-height mode. ElevationInfo.featureExpressionInfo is not supported when the elevation info is specified for this class. If the elevation info is not specified, the effective elevation depends on the context and could vary per point.

filters

autocast Property

Type: Collection<BuildingFilter>

Since: ArcGIS Maps SDK for JavaScript 4.12

Collection of filters that can be used to show or hide specific features in the SceneView. Using filters is useful when only a subset of the data in the layer should be displayed. To activate a BuildingFilter add it to this Collection and assign its BuildingFilter.id to activeFilterId. Once activated, only the features that satisfy the conditions defined by the BuildingFilter.filterBlocks of the filter are displayed in the SceneView.

Example

// define a floor filter
const buildingFilter = new BuildingFilter({
  filterBlocks: [{
    // an SQL expression that filters using the BldgLevel field
    filterExpression: "BldgLevel = 3"
  }]
});
// set the filter in the filters array on the layer
buildingLayer.filters = [buildingFilter];
// specify which filter is the one that should be applied
buildingLayer.activeFilterId = buildingFilter.id;

fullExtent

autocast inherited Property

Type: Extent | null | undefined

Inherited from: Layer

The full extent of the layer. By default, this is worldwide. This property may be used to set the extent of the view to match a layer's extent so that its features appear to fill the view. See the sample snippet below.

The fullExtent property is always null for GroupLayer.

Example

// Once the layer loads, set the view's extent to the layer's full extent
layer.when(function(){
  view.extent = layer.fullExtent;
});

id

inherited Property

Type: string

Inherited from: Layer

The unique ID assigned to the layer. If not set by the developer, it is automatically generated when the layer is loaded.

layerId

inherited Property

Type: number

Inherited from: SceneService

The layer ID, or layer index, of a Scene Service layer. This is particularly useful when loading a single layer with the portalItem property from a service containing multiple layers. You can specify this value in one of two scenarios:

When loading the layer via the portalItem property.
When pointing the layer url directly to the Scene Service.

If a layerId is not specified in either of the above scenarios, then the first layer in the service (layerId = 0) is selected.

Examples

// while these examples use a SceneLayer, the same pattern can be
// used for other layers that may be loaded from portalItem ids

// loads the third layer in the given Portal Item
let layer = new SceneLayer({
  portalItem: {
    id: "73df987984b24094b848d580eb83b0fb"
  },
  layerId: 2
});

// If not specified, the first layer (layerId: 0) will be returned
let layer = new SceneLayer({
  portalItem: {
    id: "73df987984b24094b848d580eb83b0fb"
  }
});

// Can also be used if URL points to service and not layer
let layer = new SceneLayer({
  url: "https://scenesampleserverdev.arcgis.com/arcgis/rest/services/Hosted/DevA_Trees/SceneServer",
  layerId: 0  // Notice that the url doesn't end with /2
});

// This code returns the same layer as the previous snippet
let layer = new SceneLayer({
  url: "https://scenesampleserverdev.arcgis.com/arcgis/rest/services/Hosted/DevA_Trees/SceneServer/layers/0",
  // The layer id is specified in the URL
});

legendEnabled

Property

Type: boolean

Indicates whether the layer will be included in the legend.

Default value: true

listMode

inherited Property

Type: LayerListMode

Inherited from: Layer

Indicates how the layer should display in the Layer List component. The possible values are listed below.

Value	Description
show	The layer is visible in the table of contents.
hide	The layer is hidden in the table of contents.
hide-children	If the layer is a GroupLayer, BuildingSceneLayer, KMLLayer, MapImageLayer, SubtypeGroupLayer, TileLayer, or WMSLayer, hide the children layers from the table of contents.

Default value: "show"

loaded

readonlyinherited Property

Type: boolean

Inherited from: Layer

Indicates whether the layer's resources have loaded. When true, all the properties of the object can be accessed.

Default value: false

loadError

readonlyinherited Property

Type: EsriError | null | undefined

Inherited from: LoadableMixin

The Error object returned if an error occurred while loading.

loadStatus

readonlyinherited Property

Type: "not-loaded" | "loading" | "failed" | "loaded"

Inherited from: LoadableMixin

Represents the status of a load() operation.

Value	Description
not-loaded	The object's resources have not loaded.
loading	The object's resources are currently loading.
loaded	The object's resources have loaded without errors.
failed	The object's resources failed to load. See loadError for more details.

Default value: "not-loaded"

loadWarnings

readonlyinherited Property

Type: any[]

Inherited from: LoadableMixin

A list of warnings which occurred while loading.

maxScale

inherited Property

Type: number

Inherited from: ScaleRangeLayer

The maximum scale (most zoomed in) at which the layer is visible in the view. If the map is zoomed in beyond this scale, the layer will not be visible. A value of 0 means the layer does not have a maximum scale. The maxScale value should always be smaller than the minScale value, and greater than or equal to the service specification.

Default value: 0

Examples

// The layer will not be visible when the view is zoomed in beyond a scale of 1:1,000
layer.maxScale = 1000;

// The layer's visibility is not restricted to a maximum scale.
layer.maxScale = 0;

minScale

inherited Property

Type: number

Inherited from: ScaleRangeLayer

The minimum scale (most zoomed out) at which the layer is visible in the view. If the map is zoomed out beyond this scale, the layer will not be visible. A value of 0 means the layer does not have a minimum scale. The minScale value should always be larger than the maxScale value, and lesser than or equal to the service specification.

Default value: 0

Examples

// The layer will not be visible when the view is zoomed out beyond a scale of 1:3,000,000
layer.minScale = 3000000;

// The layer's visibility is not restricted to a minimum scale.
layer.minScale = 0;

opacity

inherited Property

Type: number

Inherited from: Layer

The opacity of the layer. This value can range between 1 and 0, where 0 is 100 percent transparent and 1 is completely opaque.

Known Limitations

In a 3D SceneView, modifying opacity is not supported for DimensionLayer, GaussianSplatLayer, IntegratedMesh3DTilesLayer, IntegratedMeshLayer, LineOfSightLayer, PointCloudLayer, ViewshedLayer, and VoxelLayer.

Default value: 1

Example

// Makes the layer 50% transparent
layer.opacity = 0.5;

outFields

Property

Type: string[] | null | undefined

Since: ArcGIS Maps SDK for JavaScript 4.15

An array of field names from the service to include with each feature in all sublayers. To fetch the values from all fields in all sublayers, use ["*"]. BuildingSceneLayers usually have a large number of fields, so fetching all the values might lead to slower load times. Fields specified in outFields will be requested alongside with required fields for rendering and filtering on all sublayers.

To include fields only in a specific sublayer, use the BuildingComponentSublayer.outFields property of the sublayer.

See also

BuildingComponentSublayer.outFields

Example

// Get the specified fields from the service in all sublayers
sl.outFields = ["CreatedPhase", "DemolishedPhase", "BldgLevel"];

parent

inherited Property

Type: Map | Basemap | Ground | GroupLayer | CatalogDynamicGroupLayer | CatalogLayer | null | undefined

Inherited from: Layer

Since: ArcGIS Maps SDK for JavaScript 4.27

The parent to which the layer belongs.

persistenceEnabled

inherited Property

Type: boolean

Inherited from: OperationalLayer

Since: ArcGIS Maps SDK for JavaScript 4.28

Enable persistence of the layer in a WebMap or WebScene.

Default value: true

portalItem

autocast inherited Property

Type: PortalItem | null | undefined

Inherited from: PortalLayer

The portal item from which the layer is loaded. If the portal item references a feature or scene service, then you can specify a single layer to load with the layer's layerId property.

Loading non-spatial tables

Non-spatial tables can be loaded from service items hosted in ArcGIS Online and ArcGIS Enterprise. This only applies to:

FeatureLayer if the layer's isTable returns true at version 4.17.
SubtypeGroupLayer if the layer's isTable returns true at version 4.32.

Examples

// While this example uses FeatureLayer, this same pattern can be
// used for other layers that may be loaded from portalItem ids.
const layer = new FeatureLayer({
  portalItem: {  // autocasts as new PortalItem()
    id: "caa9bd9da1f4487cb4989824053bb847"
  }  // the first layer in the service is returned
});

// Set hostname when using an on-premise portal (default is ArcGIS Online)
// esriConfig.portalUrl = "http://myHostName.esri.com/arcgis";

// While this example uses FeatureLayer, this same pattern can be
// used for SceneLayers.
const layer = new FeatureLayer({
  portalItem: {  // autocasts as new PortalItem()
    id: "8d26f04f31f642b6828b7023b84c2188"
  },
  // loads the third item in the given feature service
  layerId: 2
});

// Initialize GeoJSONLayer by referencing a portalItem id pointing to geojson file.
const layer = new GeoJSONLayer({
  portalItem: new PortalItem({
    id: "81e769cd7031482797e1b0768f23c7e1",
    // optionally define the portal, of the item.
    // if not specified, the default portal defined is used.
    // see https://developers.arcgis.com/javascript/latest/references/core/config/#portalUrl
    portal: new Portal({
      url: "https://jsapi.maps.arcgis.com/"
    })
  }
});

// This snippet loads a table hosted in ArcGIS Online.
const table = new FeatureLayer({
  portalItem: { // autocasts as esri/portal/PortalItem
    id: "123f4410054b43d7a0bacc1533ceb8dc"
  }
});

// Before adding the table to the map, it must first be loaded and confirm it is the right type.
table.load().then(() => {
  if (table.isTable) {
    map.tables.add(table);
  }
});

// While this example uses FeatureLayer, this same pattern can be
// used for other layers that may be loaded from portalItem ids.
const layer = new FeatureLayer({
  portalItem: { // autocasts as esri/portal/PortalItem
    id: "caa9bd9da1f4487cb4989824053bb847",
    // Set an API key to access a secure portal item configured with API key authentication.
    apiKey: "APIKEY"
  }
});

spatialReference

autocast inherited Property

Type: SpatialReference

Inherited from: SceneService

The spatial reference of the layer.

sublayers

readonly Property

Type: Collection<BuildingSublayerUnion>

Hierarchical structure of sublayers in a BuildingSceneLayer. Usually contains an Overview BuildingComponentSublayer and a Full Model BuildingGroupSublayer. However, some BuildingSceneLayers can contain only the Full Model BuildingGroupSublayer or the discipline BuildingGroupSublayers directly.

summaryStatistics

readonly Property

Type: BuildingSummaryStatistics | null | undefined

Since: ArcGIS Maps SDK for JavaScript 4.15

Summary statistics for all component layers in the building scene layer. This object has to be loaded before accessing its properties.

Example

// load the layer
buildingLayer.load().then(function() {
 // load the statistics on the summaryStatistics property
 // to be able to access them
 buildingLayer.summaryStatistics.load().then(function() {
   console.log(buildingLayer.summaryStatistics);
 });
});

title

Property

Type: string | null | undefined

The title of the layer used to identify it in places such as the Legend and LayerList.

When loading a layer by service url, the title is derived from the service name. If the service has several layers, then the title of each layer will be the concatenation of the service name and the layer name. When the layer is loaded from a portal item, the title of the portal item will be used instead. Finally, if a layer is loaded as part of a webmap or a webscene, then the title of the layer as stored in the webmap/webscene will be used.

type

readonly Property

Type: "building-scene"

The layer type provides a convenient way to check the type of the layer without the need to import specific layer modules.

uid

readonlyinherited Property

Type: string

Inherited from: IdentifiableMixin

Since: ArcGIS Maps SDK for JavaScript 4.33

An automatically generated unique identifier assigned to the instance. The unique id is generated each time the application is loaded.

url

inherited Property

Type: string | null | undefined

Inherited from: SceneService

The URL of the REST endpoint of the layer or scene service. The URL may either point to a resource on ArcGIS Enterprise or ArcGIS Online.

The layer may be specified using the layerId property when the url points directly to a service and not a specific layer. If layerId is not specified, then it will default to the first layer in the service.

Examples

// Layer from Scene Service on ArcGIS Server
let sceneLayer = new SceneLayer({
  url: "https://services.arcgis.com/V6ZHFr6zdgNZuVG0/arcgis/rest/services/Paris_3D_Local_WSL2/SceneServer/layers/0"
});

// Can also be used if URL points to service and not layer
let layer = new SceneLayer({
  // Notice that the url doesn't end with /0
  url: "https://scenesampleserverdev.arcgis.com/arcgis/rest/services/Hosted/DevA_Trees/SceneServer",
  layerId: 0
});

version

readonlyinherited Property

Type: SceneServiceVersion

Inherited from: SceneService

The version of the scene service specification used for this service.

See also

github.com/Esri/i3s-spec

Example

// Prints the version to the console - e.g. 1.4, 1.5, etc.
console.log(layer.version.versionString);

visibilityTimeExtent

autocast inherited Property

Type: TimeExtent | null | undefined

Inherited from: Layer

Since: ArcGIS Maps SDK for JavaScript 4.30

Specifies a fixed time extent during which a layer should be visible. This property can be used to configure a layer that does not have time values stored in an attribute field to work with time. Once configured, the TimeSlider widget will display the layer within the set time extent. In the case that only one of the TimeExtent.start or TimeExtent.end date values are available, the layer remains visible indefinitely in the direction where there is no time value.

Aerial imagery can capture seasonal variations in vegetation, water bodies, and land use patterns. For example, in agricultural regions, aerial imageries taken during different growing seasons provide insights into crop health and productivity. Defining a fixed time extent on imageries from specific time periods provides temporal context and facilitates focused analysis based on specific time periods or events.

See also

Sample - GraphicsLayer with visibilityTimeExtent

visible

inherited Property

Type: boolean

Inherited from: Layer

Indicates if the layer is visible in the View. When false, the layer may still be added to a Map instance that is referenced in a view, but its features will not be visible in the view.

Default value: true

Example

// The layer is no longer visible in the view
layer.visible = false;

// Watch for changes in the layer's visibility
// and set the visibility of another layer when it changes
reactiveUtils.watch(
  () => layer.visible,
  (visible) => {
    if (visible) {
      anotherLayer.visible = true;
    } else {
      anotherLayer.visible = false;
    }
  }
);

Methods

Method	Signature	Class
`fromArcGISServerUrl` inherited static	`fromArcGISServerUrl(params: string \| FromArcGISServerUrlParameters): Promise<Layer>`	Layer
`fromPortalItem` inherited static	`fromPortalItem(params: LayerFromPortalItemParameters): Promise<Layer>`	Layer
`cancelLoad` inherited	`cancelLoad(): this`	LoadableMixin
`createLayerView` inherited	`createLayerView<T extends LayerView = LayerView>(view: View<T>, options?: AbortOptions): Promise<T>`	Layer
`destroy` inherited	`destroy(): void`	Layer
`emit` inherited	`emit<Type extends EventNames<this>>(type: Type, event?: this["@eventTypes"][Type]): boolean`	EventedMixin
`fetchAttributionData` inherited	`fetchAttributionData(): Promise<any>`	Layer
`hasEventListener` inherited	`hasEventListener<Type extends EventNames<this>>(type: Type): boolean`	EventedMixin
`isFulfilled` inherited	`isFulfilled(): boolean`	EsriPromiseMixin
`isRejected` inherited	`isRejected(): boolean`	EsriPromiseMixin
`isResolved` inherited	`isResolved(): boolean`	EsriPromiseMixin
`load` inherited	`load(options?: AbortOptions \| null \| undefined): Promise<this>`	LoadableMixin
`loadAll`	`loadAll(): Promise<this>`
`on` inherited	`on<Type extends EventNames<this>>(type: Type, listener: EventedCallback<this["@eventTypes"][Type]>): ResourceHandle`	EventedMixin
`save`	`save(): Promise<PortalItem>`
`saveAs`	`saveAs(portalItem: PortalItem, options?: SaveAsOptions): Promise<PortalItem>`
`when` inherited	`when<TResult1 = this, TResult2 = never>(onFulfilled?: OnFulfilledCallback<this, TResult1> \| null \| undefined, onRejected?: OnRejectedCallback<TResult2> \| null \| undefined): Promise<TResult1 \| TResult2>`	EsriPromiseMixin

fromArcGISServerUrl

inheritedstatic Method

Signature: fromArcGISServerUrl (params: string | FromArcGISServerUrlParameters): Promise<Layer>

Inherited from: Layer

Creates a new layer instance from an ArcGIS Server URL. Depending on the URL, the returned layer type may be a BuildingSceneLayer, CatalogLayer, ElevationLayer, FeatureLayer, GroupLayer, ImageryLayer, ImageryTileLayer, IntegratedMeshLayer, KnowledgeGraphLayer, MapImageLayer, OrientedImageryLayer, PointCloudLayer, SceneLayer, StreamLayer, SubtypeGroupLayer, TileLayer, or VideoLayer.

This is useful when you work with various ArcGIS Server URLs, but you don't necessarily know which layer type(s) they create. This method creates the appropriate layer type for you. In case of a feature service or a scene service, when the URL points to the service and the service has multiple layers, the returned promise will resolve to a GroupLayer.

Beginning with version 4.17, it is possible to load tables from hosted feature services. This only applies to feature layers, and will successfully load if FeatureLayer.isTable returns true.

The following table details what is returned when loading specific URL types.

URL	Returns
Feature service with one layer	FeatureLayer where FeatureLayer.isTable returns `false`.
Feature service with one table	FeatureLayer where FeatureLayer.isTable returns `true`.
Feature service with more than one layer(s)/table(s)	GroupLayer with layers and tables.
Layers with type other than "Feature Layer" are discarded, e.g. Utility Network Layers	N/A

See also

FeatureLayer.isTable

Parameters

Parameter	Type	Description	Required
params	`string \| FromArcGISServerUrlParameters`	Input parameters for creating the layer.

Returns: Promise<Layer>
Returns a promise that resolves to the new Layer instance.

Examples

// This snippet shows how to add a feature layer from an ArcGIS Server URL
// Get an ArcGIS Server URL from a custom function
const arcgisUrl = getLayerUrl();

Layer.fromArcGISServerUrl({
  url: arcgisUrl,
  properties: {
    // set any layer properties here
    popupTemplate: new PopupTemplate()
  }
}).then(function(layer){
  // add the layer to the map
  map.add(layer);
});

// This snippet shows how to add a table from an ArcGIS Server URL
// Get an ArcGIS Server URL from a custom function
const arcgisUrl = getLayerUrl();

Layer.fromArcGISServerUrl({
  url: arcgisUrl
}).then(function(layer){
  // Load the table before it can be used
  layer.load().then(function() {
    // Check that it is the right type
    if (layer.isTable) {
      // Add table to map's tables collection
      map.tables.add(layer);
    }
  });
});

fromPortalItem

inheritedstatic Method

Signature: fromPortalItem (params: LayerFromPortalItemParameters): Promise<Layer>

Inherited from: Layer

Creates a new layer instance of the appropriate layer class from an ArcGIS Online or ArcGIS Enterprise portal item. If the item points to a feature service with multiple layers, then a GroupLayer is created. If the item points to a service with a single layer, then it resolves to a layer of the same type of class as the service.

Note

At version 4.29, MediaLayer can be loaded from portal items.
At version 4.28, GroupLayer and OrientedImageryLayer can be loaded from portal items.
At version 4.25, CSVLayer and GeoJSONLayer can be loaded from CSV and GeoJSON portal items respectively.
At version 4.17, it is possible to load tables from feature service items hosted in ArcGIS Online and ArcGIS Enterprise. This only applies to feature layers, and will successfully load if FeatureLayer.isTable returns true.

The following table details what is returned when loading specific item types.

Item(s)	Returns
Feature service with one layer	FeatureLayer where FeatureLayer.isTable returns `false`.
Feature service with one table	FeatureLayer where FeatureLayer.isTable returns `true`.
Feature service with more than one layer(s)/table(s)	GroupLayer with layers and tables.
Feature collection with one layer	FeatureLayer where FeatureLayer.isTable returns `false`.
Feature collection with one table	FeatureLayer where FeatureLayer.isTable returns `true`.
Feature collection with more than one layer(s)/table(s)	GroupLayer with layers and tables.

Known Limitations

This method does not currently work with OGCFeatureServer portal items.

See also

Parameters

Parameter	Type	Description	Required
params	`LayerFromPortalItemParameters`	The parameters for loading the portal item.

Returns: Promise<Layer>
Returns a promise which resolves to the new layer instance.

Examples

// Create a layer from a specified portal item and add to the map
Layer.fromPortalItem({
  portalItem: {  // autocasts new PortalItem()
    id: "8444e275037549c1acab02d2626daaee"
  }
}).then(function(layer){
  // add the layer to the map
  map.add(layer);
});

// Create a table from a specified portal item and add it to the map's tables collection
Layer.fromPortalItem({
  portalItem: { // autocasts new PortalItem()
    id: "123f4410054b43d7a0bacc1533ceb8dc" // This is a hosted table stored in a feature service
  }
}).then(function(layer) {
  // Necessary to load the table in order for it to be read correctly
  layer.load().then(function() {
    // Confirm this reads as a table
    if (layer.isTable) {
      // Add the new table to the map's table collection
      map.tables.add(layer);
    }
  });
});

cancelLoad

inherited Method

Signature: cancelLoad (): this

Inherited from: LoadableMixin

Cancels a load() operation if it is already in progress.

Returns: this

createLayerView

inherited Method

Signature: createLayerView <T extends LayerView = LayerView>(view: View<T>, options?: AbortOptions): Promise<T>

Type parameters: <T extends LayerView = LayerView>

Inherited from: Layer

Called by the views, such as MapView and SceneView, when the layer is added to the Map.layers collection and a layer view must be created for it. This method is used internally and there is no use case for invoking it directly.

See also

Sample - Custom WebGL layer view

Parameters

Parameter	Type	Description	Required
view	`View`	The parent view.
options	`AbortOptions`	An object specifying additional options. See the object specification table below for the required properties of this object.

Returns: Promise
Resolves with a LayerView instance.

destroy

inherited Method

Signature: destroy (): void

Inherited from: Layer

Since: ArcGIS Maps SDK for JavaScript 4.17

Destroys the layer and any associated resources (including its portalItem, if it is a property on the layer). The layer can no longer be used once it has been destroyed.

The destroyed layer will be removed from its parent object like Map, WebMap, WebScene, Basemap, Ground, or GroupLayer.

See also

Returns: void

emit

inherited Method

Signature: emit <Type extends EventNames<this>>(type: Type, event?: this["@eventTypes"][Type]): boolean

Type parameters: <Type extends EventNames<this>>

Inherited from: EventedMixin

Emits an event on the instance. This method should only be used when creating subclasses of this class.

Parameters

Parameter	Type	Description	Required
type	`Type`	The name of the event.
event	`this["@eventTypes"][Type]`	The event payload.

Returns: boolean
true if a listener was notified

fetchAttributionData

inherited Method

Signature: fetchAttributionData (): Promise<any>

Inherited from: Layer

Fetches custom attribution data for the layer when it becomes available.

Returns: Promise<any>
Resolves to an object containing custom attribution data for the layer.

hasEventListener

inherited Method

Signature: hasEventListener <Type extends EventNames<this>>(type: Type): boolean

Type parameters: <Type extends EventNames<this>>

Inherited from: EventedMixin

Indicates whether there is an event listener on the instance that matches the provided event name.

Parameters

Parameter	Type	Description	Required
type	`Type`	The name of the event.

Returns: boolean
Returns true if the class supports the input event.

isFulfilled

inherited Method

Signature: isFulfilled (): boolean

Inherited from: EsriPromiseMixin

isFulfilled() may be used to verify if creating an instance of the class is fulfilled (either resolved or rejected). If it is fulfilled, true will be returned.

Returns: boolean
Indicates whether creating an instance of the class has been fulfilled (either resolved or rejected).

isRejected

inherited Method

Signature: isRejected (): boolean

Inherited from: EsriPromiseMixin

isRejected() may be used to verify if creating an instance of the class is rejected. If it is rejected, true will be returned.

Returns: boolean
Indicates whether creating an instance of the class has been rejected.

isResolved

inherited Method

Signature: isResolved (): boolean

Inherited from: EsriPromiseMixin

isResolved() may be used to verify if creating an instance of the class is resolved. If it is resolved, true will be returned.

Returns: boolean
Indicates whether creating an instance of the class has been resolved.

load

inherited Method

Signature: load (options?: AbortOptions | null | undefined): Promise<this>

Inherited from: LoadableMixin

Loads the resources referenced by this class. This method automatically executes for a View and all of the resources it references in Map if the view is constructed with a map instance.

This method must be called by the developer when accessing a resource that will not be loaded in a View.

The load() method only triggers the loading of the resource the first time it is called. The subsequent calls return the same promise.

It's possible to provide a signal to stop being interested into a Loadable instance load status. When the signal is aborted, the instance does not stop its loading process, only cancelLoad() can abort it.

Parameters

Parameter	Type	Description	Required
options	`AbortOptions \| null \| undefined`	Additional options.

Returns: Promise<this>
Resolves when the resources have loaded.

loadAll

Method

Signature: loadAll (): Promise<this>

Since: ArcGIS Maps SDK for JavaScript 4.11

Loads the layer and all of its sublayers.

See also

load()

Returns: Promise<this>
Resolves when all sublayers have been loaded. Rejects if at least one of the sublayers failed to load.

Example

// Print the names of all components in the building scene layer after ensuring that they have been loaded
buildingSceneLayer.loadAll()
  .then(function() {
    const allComponentNames = buildingSceneLayer.allSublayers
      .filter(function(sublayer) { return sublayer.type === "building-component"; })
      .map(function(sublayer) { return sublayer.title; })
    console.log(allComponentNames.join("\n"));
  });
  .catch(function(error) {
    console.log("Error: one or more sublayer failed to load");
  });

on

inherited Method

Signature: on <Type extends EventNames<this>>(type: Type, listener: EventedCallback<this["@eventTypes"][Type]>): ResourceHandle

Type parameters: <Type extends EventNames<this>>

Inherited from: EventedMixin

Registers an event handler on the instance. Call this method to hook an event with a listener.

Parameters

Parameter	Type	Description	Required
type	`Type`	An event or an array of events to listen for.
listener	`EventedCallback<this["@eventTypes"][Type]>`	The function to call when the event fires.

Returns

ResourceHandle

Returns an event handler with a remove() method that should be called to stop listening for the event(s).

Property	Type	Description
remove	Function	When called, removes the listener from the event.

Example

view.on("click", function(event){
  // event is the event handle returned after the event fires.
  console.log(event.mapPoint);
});

save

Method

Signature: save (): Promise<PortalItem>

Since: ArcGIS Maps SDK for JavaScript 4.31

Saves the layer to its existing portal item in the Portal authenticated within the user's current session. If the layer is not saved to a PortalItem, then you should use saveAs().

See also

saveAs()

Returns: Promise<PortalItem>
When resolved, returns the portal item to which the layer is saved.

Example

const portalItem = await layer.save();

saveAs

Method

Signature: saveAs (portalItem: PortalItem, options?: SaveAsOptions): Promise<PortalItem>

Since: ArcGIS Maps SDK for JavaScript 4.31

Saves the layer to a new portal item in the Portal authenticated within the user's current session.

See also

save()

Parameters

Parameter	Type	Description	Required
portalItem	`PortalItem`	The portal item to which the layer will be saved.
options	`SaveAsOptions`	additional save options

Returns: Promise<PortalItem>
When resolved, returns the portal item to which the layer is saved.

Example

const portalItem = new PortalItem();
await layer.saveAs(portalItem);

when

inherited Method

Signature: when <TResult1 = this, TResult2 = never>(onFulfilled?: OnFulfilledCallback<this, TResult1> | null | undefined, onRejected?: OnRejectedCallback<TResult2> | null | undefined): Promise<TResult1 | TResult2>

Type parameters: <TResult1 = this, TResult2 = never>

Inherited from: EsriPromiseMixin

when() may be leveraged once an instance of the class is created. This method takes two input parameters: an onFulfilled function and an onRejected function. The onFulfilled executes when the instance of the class loads. The onRejected executes if the instance of the class fails to load.

Parameters

Parameter	Type	Description	Required
onFulfilled	`OnFulfilledCallback<this, TResult1> \| null \| undefined`	The function to call when the promise resolves.
onRejected	`OnRejectedCallback \| null \| undefined`	The function to execute when the promise fails.

Returns: Promise<TResult1 | TResult2>
Returns a new promise for the result of onFulfilled that may be used to chain additional functions.

Example

// Although this example uses MapView, any class instance that is a promise may use when() in the same way
let view = new MapView();
view.when(function(){
  // This function will execute once the promise is resolved
}, function(error){
  // This function will execute if the promise is rejected due to an error
});

Events

Name	Type
`layerview-create` inherited	CustomEvent<LayerLayerviewCreateEvent>
`layerview-create-error` inherited	CustomEvent<LayerLayerviewCreateErrorEvent>
`layerview-destroy` inherited	CustomEvent<LayerLayerviewDestroyEvent>

layerview-create

inherited Event

layerview-create: CustomEvent<LayerLayerviewCreateEvent>

Inherited from: Layer

Fires after the layer's LayerView is created and rendered in a view.

See also

View.whenLayerView()

Example

// This function will fire each time a layer view is created for this
// particular view.
layer.on("layerview-create", function(event){
  // The LayerView for the layer that emitted this event
  event.layerView;
});

layerview-create-error

inherited Event

layerview-create-error: CustomEvent<LayerLayerviewCreateErrorEvent>

Inherited from: Layer

Fires when an error emits during the creation of a LayerView after a layer has been added to the map.

See also

View.whenLayerView()

Example

// This function fires when an error occurs during the creation of the layer's layerview
layer.on("layerview-create-error", function(event) {
  console.error("LayerView failed to create for layer with the id: ", layer.id, " in this view: ", event.view);
});

layerview-destroy

inherited Event

layerview-destroy: CustomEvent<LayerLayerviewDestroyEvent>

Inherited from: Layer

Fires after the layer's LayerView is destroyed and no longer renders in a view.